Quote Originally Posted by LoneStar
I'm not sure if running the output from the skimmer to the tank is a good idea. If its a beckett, you will have microbubbles like crazy.
I can't speak for this particular skimmer, but the beckett skimmers that I've made do not release microbubbles into the tank when they're set up right. This is also true for most well made beckett skimmers (I'm sure Pete's is good) as long as they're run by the right pump and adjusted well.

But, you can't feed the skimmer from the tank overflow, if that's what you're asking. You need to have a sump, and you feed the skimmer from a pump connected to the sump, and drain the skimmer right back into the sump. You should use a separate return and skimmer pump; it's MUCH easier to keep the skimmer adjusted. If you're talking about a 29 gallon tank, unless your sump is about 50 gallons, running a mag 12 in your sump will create a lot of heat. A beckett skimmer of any size is really too big for a 29 gallon tank, but you'll have no problem keeping your water clean! Since Pete is making it for you, make sure you tell him what size tank you have and ask him about how to set it up. If it were me, I'd consider buying a nice external skimmer pump that runs cool like a pan world 100px (or even 50px if Pete can make you a really small beckett skimmer) and run your skimmer external; you probably won't want to run it 24/7.